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Expired Canadian patentCanada

Sheet nails in strips

CA 1292377 C · Owner: Nordisk Kartro Ab · Inventors: Sundberg, Ingvar

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Sheet nails made in a metal strip and connected to each other in the strip via connecting bridges are oriented at an angle or perpendicular to the longitudinal direction of the strip. The sheet nails have a profiled shank and a profiled head at one end as well, as an edge, a point or several laterally spaced points at the opposite end of the shank. The shank is connected to the head via a transition portion in the form of a gently curved bent portion. The head the shank, and the bent portion have preferably a uniform crosssectional shape. The head, the transition portion and at least a portion of the shank can also have an extra reinforcing profile in addition to the common profile in these …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted November 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 25, 1986
GrantedNovember 26, 1991
Term endedNovember 26, 2008
Patent numberCA 1292377 C
Classification (IPC)F16B15/08 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedSep 25, 1986Patent grantedNov 26, 1991Term endedNov 26, 2008

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.